CVE-2022-33747

CVSS V2 None CVSS V3 Low 3.8

Description

Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g. removing pages from a guest's P2M (Physical-to-Machine) mapping. When large pages are in use to map guest pages in the 2nd-stage page tables, such a removal operation may incur a memory allocation (to replace a large mapping with individual smaller ones). These memory allocations are taken from the global memory pool. A malicious guest might be able to cause the global memory pool to be exhausted by manipulating its own P2M mappings.

Overview

CVE ID
CVE-2022-33747

Assigner
security@xen.org

Vulnerability Status
Analyzed

Published Version
2022-10-11T13:15:10

Last Modified Date
2022-12-09T18:52:28

Weakness Enumerations

CWE	URL
CWE-400	http://cwe.mitre.org/data/definitions/400.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:o:xen:xen:::::::arm:*	1	OR

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
CHANGED

Confidentiality Impact
NONE

Availability Impact
LOW

Base Score
3.8

Base Severity
LOW

Exploitability Score
2

Impact Score
1.4

References

Reference URL	Reference Tags
http://www.openwall.com/lists/oss-security/2022/10/11/5	Mailing List Patch Third Party Advisory
http://xenbits.xen.org/xsa/advisory-409.html	Patch Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/
https://www.debian.org/security/2022/dsa-5272
https://xenbits.xenproject.org/xsa/advisory-409.txt	Patch Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2022-33747
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-33747

History

Created	Old Value	New Value	Data Type	Notes
2022-10-11 14:00:21				Added to TrackCVE
2022-12-07 06:04:37	2022-10-11T13:15Z	2022-10-11T13:15:10	CVE Published Date	updated
2022-12-07 06:04:37		2022-11-17T03:15:12	CVE Modified Date	updated
2022-12-07 06:04:37		Undergoing Analysis	Vulnerability Status	updated
2022-12-07 06:04:45			References	updated
2022-12-09 19:16:50		2022-12-09T18:52:28	CVE Modified Date	updated
2022-12-09 19:16:50	Undergoing Analysis	Analyzed	Vulnerability Status	updated